Add the vibrate attribute to the Notification object

LayoutTests/http/tests/notifications/notification-properties.html

Index: LayoutTests/http/tests/notifications/notification-properties.html
diff --git a/LayoutTests/http/tests/notifications/notification-properties.html b/LayoutTests/http/tests/notifications/notification-properties.html
index a70e818510478fc4a550c742f9e47697a210b247..5cff9653a5724597e542c6d4caf745b11a30d743 100644
--- a/LayoutTests/http/tests/notifications/notification-properties.html
+++ b/LayoutTests/http/tests/notifications/notification-properties.html
@@ -66,7 +66,20 @@
             // Setting an empty string as the tag should be equal to not setting the tag at all.
             assert_equals(noTagNotification.tag, emptyTagNotification.tag);
 
+            // Tests that sequence<unsigned long> input no throws exceptions.

[Peter Beverloo, 2015/04/01 14:26:29]

sequence<unsigned long> doesn't mean anything to JavaScript. Perhaps describe
that it must be a valid vibration sequence?

[Sanghyun Park, 2015/04/01 17:46:08]

I'll fix this. 

+            var vibrateNotification = new Notification("My Notification", {
+                vibrate: [100, 2000, 1000]
+            });
+
+            // Verifying the exception throwing behavior, when slient set true and vibrate is presented.

[Peter Beverloo, 2015/04/01 14:26:29]

Could you add a test for ServiceWorkerRegistration.showNotification() as well,
which should reject on invalid patterns?

[Sanghyun Park, 2015/04/01 17:46:08]

Okay I'll add test of ServiceWorkerRegistration.showNotification() also.

+            assert_throws(new TypeError(), function() {
+                var notification = new Notification('Title', {

[Peter Beverloo, 2015/04/01 14:26:29]

nit: Please be consistent with ' vs. " for defining strings in a file.

[Sanghyun Park, 2015/04/01 17:46:08]

Done.

+                    silent: true,
+                    vibrate: 1000
+                });
+            }, 'Set vibrate, when slient is true.');
+
       }, 'Checks the properties exposed on the Notification object.');
     </script>
   </body>
-</html>
+</html>